期刊
JOURNAL OF APPLIED SPECTROSCOPY
卷 84, 期 6, 页码 1084-1088出版社
SPRINGER
DOI: 10.1007/s10812-018-0592-x
关键词
gnetic solid-phase extraction; palladium; flame atomic absorption spectrometry
类别
资金
- National Natural Science Foundation of China [21265025]
- Analysis Test Foundation of Kunming University of Science and Technology [2016P2013118006]
Clutaraldehyde cross-linked magnetic chitosan nanoparticles were synthesized and used as an adsorbent for the dispersive solid-phase extraction of palladium in active pharmaceutical ingredients (APIs) prior to analysis by a flame atomic absorption spectrophotometer. FT-IR, X-ray diffraction, and TEM were used to characterize the adsorbent. Various parameters of experimental performance, such as adsorbent amount, pH, adsorption time, desorption solutions, coexisting ions, and adsorbent reusability, were investigated and optimized. Under the optimized conditions, good linearity was achieved in the 5.0-500 mu g/L concentration range, with correlation coefficients of 0.9989. The limit of detection is 2.8 mu g/L and the recoveries of spiked samples ranged from 91.7 to 97.6%. It was confirmed that the GMCNs nanocomposite was a promising adsorbing material for extraction and preconcentration of Pd in APIs.
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